[Vanilla Fix] Fixed the bug that low-air taking off / landing objects will receive twice damage

[NetsuNegi]

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[TaranDahl]

I think this should not be implemented like that.
WW has established two separate Trackers, namely the FirstObject linked list and ATC, to track the army and air force respectively. The essential reason for this issue is that the maintenance of these two Trackers is independent, and their maintenance standards are also irrelevant.
I believe the correct implementation method is to rectify their maintenance approaches. Units with a value greater than or equal to 208 will enter the ATC. Units with a value greater than or equal to 0 and less than 208 will enter the cell linked list.